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This article mainly shows you how to view the status of Raid disk array by MegaCli tool. The content is simple and easy to understand. I hope it can help you solve your doubts. Let's let Xiaobian lead you to study and learn this article "How to view the status of Raid disk array by MegaCli tool".

Use MegaCli tool to view Raid disk array status

Using MegaCli Tool to View Raid Disk Array Status on Linux OS

The new version of MegaCli-1.01.24-0.i386.rpm installs the program under/opt. You can customize the installation directory, for example: rpm -relocate /opt/=/usr/sbin/ -i MegaCli-1.01.24-0.i386.rpm i.e. replace the installation directory/opt with/usr/sbin. Download address: www.lsi.com/support/downloads/megaraid/miscellaneous/linux/Linux_MegaCLI_1.01.24.zip I introduce installation here under/opt.

1. First of all, introduce the Linux system itself.

Software raid: view raid level, status and other information

#cat /proc/mdstat

Hardware raid: view raid manufacturer, model, level

#dmesg | grep -i raid

#cat /proc/scsi/scsi

2. The best way to view hardware raid is through the installed raid vendor's management tool, install MegaCLI tool below to view

First download MegaCli, unzip it.# rpm -ivh MegaCli-1.01.24-0.i386.rpm is installed under/opt, so the execution command is/opt/MegaCli oh.

Command Use:

#/opt/MegaCli -LDInfo -Lall -aALL Check raid level

#/opt/MegaCli -AdpAllInfo -aALL Check raid card information

#/opt/MegaCli -PDList -aALL View hard disk information

#/opt/MegaCli -AdpBbuCmd -aAll View battery information

#/opt/MegaCli -FwTermLog -Dsply -aALL View raid card log

#/opt/MegaCli -adpCount

#/opt/MegaCli -AdpGetTime -aALL

#/opt/MegaCli -AdpAllInfo -aAll

#/opt/MegaCli -LDInfo -LALL -aAll

#/opt/MegaCli -PDList -aAll

#/opt/MegaCli -AdpBbuCmd -GetBbuStatus -aALL |grep 'Charger Status'

#/opt/MegaCli -AdpBbuCmd -GetBbuStatus -aALL

#/opt/MegaCli -AdpBbuCmd -GetBbuCapacityInfo -aALL

#/opt/MegaCli -AdpBbuCmd -GetBbuDesignInfo -aALL

#/opt/MegaCli -AdpBbuCmd -GetBbuProperties -aALL

#/opt/MegaCli -cfgdsply -aALL [Display Raid card model, Raid settings, Disk related information]

3. Change of tape status, from unplugging to inserting.

Device |Normal|Damage|Rebuild|Normal

Virtual Drive |Optimal|Degraded|Degraded|Optimal

Physical Drive |Online|Failed -> Unconfigured|Rebuild|Online

4. View disk cache policies

#/opt/MegaCli -LDGetProp -Cache -L0 -a0

or

#/opt/MegaCli -LDGetProp -Cache -L1 -a0

or

#/opt/MegaCli -LDGetProp -Cache -LALL -a0

ro

#/opt/MegaCli -LDGetProp -Cache -LALL -aALL

ro

#/opt/MegaCli -LDGetProp -DskCache -LALL -aALL

5. Set disk cache policy

Cache Policy Explanation:

WT (Write through

WB (Write back)

NORA (No read ahead)

RA (Read ahead)

ADRA (Adaptive read ahead)

Cached

Direct

Examples:

#/opt/MegaCli -LDSetProp WT|WB|NORA|RA|ADRA -L0 -a0

or

#/opt/MegaCli -LDSetProp -Cached|-Direct -L0 -a0

or

enable / disable disk cache

#/opt/MegaCli -LDSetProp -EnDskCache|-DisDskCache -L0 -a0

6. Create a raid5 array consisting of physical disks 2, 3, 4, the hot spare of which is physical disk 5

#/opt/MegaCli -CfgLdAdd -r5 [1:2,1:3,1:4] WB Direct -Hsp[1:5] -a0

7. Create an array without specifying a hot spare

#/opt/MegaCli -CfgLdAdd -r5 [1:2,1:3,1:4] WB Direct -a0

8. delete pattern

#/opt/MegaCli -CfgLdDel -L1 -a0

9. Add Disk Online

#/opt/MegaCli -LDRecon -Start -r5 -Add -PhysDrv[1:4] -L1 -a0

10. After the array is created, there is a process to initialize the synchronization block, and you can see its progress.

#/opt/MegaCli -LDInit -ShowProg -LALL -aALL

or as a dynamic visual text interface.

#/opt/MegaCli -LDInit -ProgDsply -LALL -aALL

11. View array background initialization progress

#/opt/MegaCli -LDBI -ShowProg -LALL -aALL

or as a dynamic visual text interface.

#/opt/MegaCli -LDBI -ProgDsply -LALL -aALL

12. Specify disk 5 as global hot spare

#/opt/MegaCli -PDHSP -Set [-EnclAffinity] [-nonRevertible] -PhysDrv[1:5] -a0

13. Designated as a dedicated hot spare for an array

#/opt/MegaCli -PDHSP -Set [-Dedicated [-Array1]] [-EnclAffinity] [-nonRevertible] -PhysDrv[1:5] -a0

14. Delete global hot standby

#/opt/MegaCli -PDHSP -Rmv -PhysDrv[1:5] -a0

15. Take a physical disk offline/online

#/opt/MegaCli -PDOffline -PhysDrv [1:4] -a0

#/opt/MegaCli -PDOnline -PhysDrv [1:4] -a0

16. View physical disk rebuild progress

#/opt/MegaCli -PDRbld -ShowProg -PhysDrv [1:5] -a0

or as a dynamic visual text interface.

#/opt/MegaCli -PDRbld -ProgDsply -PhysDrv [1:5] -a0

That's all for "How MegaCli Tools Check Raid Array Status". Thanks for reading! I believe that everyone has a certain understanding, hope to share the content to help everyone, if you still want to learn more knowledge, welcome to pay attention to the industry information channel!

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